Vise.



A. B. TOZER.

VISE.v

APPLICATION FILED JUNE 21. I91! 1,257,152. Patented Feb. 19,1918.

FTQE.

ARCHIBALD B. TOZEB, 0F ERIE, PENNSYLVANIA, ASSIGNOR TO REEDMANUFACTURING COMPANY, OF-ERIE, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

VISE.

Specification of Letters Patent.

Patented Feb. 19, 1918.

Application filed June 21, 1917. Serial No. 176,068.

To all whom it may concern:

Be it known that I, ARGHIBALD B. Toznn, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented new and useful Improvements in Vises, of which the following isa specification.

This invention relates to vises and consists in certain improvements inthe construction thereof as will be hereinafter fully described andpointed out in the claims.

More particularly the invention relates to what are commonly termedswivel vises and means for locking the swiveled base to the fixed base.The means so provided to be satisfactory must look the swiveled baseagainst turning relatively to the fixed base and preferably it shouldalso lock the swiveled base rigidly with the fixed base. The convenienceand facility with which the locking and unlocking of the swiveled basecan be accomplished must also be considered.

The invention is illustrated in the accompanying drawings as followsFigure 1 shows a side elevation of the device, partly in section.

Fig. 2 a section of the locking portion of the base on the line 2-2 inFig. 1.

Fig. 3 a plan view of the locking-ring.

Fig. 4: a section of a slight modification.

1 marks the fixed base. This is in the form of a ring; 2 the swiveledbase which is mounted on the fixed base, 3 the fixed jaw and 4 themovable jaw of the vise.

The periphery of the fixed base 1 is in the form of a tapered surface 5.The fixed base has the usual projection 6 for receiving a lag screw orother means for attaching the vise to a bench.

A split ring 7 is arranged within the fixed base 1 and has a taperedouter surface corresponding to the surface 5. The ring is secured to theswiveled base by means of a bolt 8 which extends through the swiveledbase into the ring 7. An opening 9 of the split ring is wedge-shapedbeing given this shape by the beveled ends 10 of the ring. The ring 7 isspread by means of an expanding block 11 operating between the ends ofthe ring, the block having a wedge-shape corresponding to the beveledsurfaces 10. A screw 12 extends through an opening 13 in the swiveledbase into the block 11. The

screw is provided with a head 14 with a sliding handle 15 by means ofwhich it may be readily operated.

It will be observed that as the ring 7 is expanded it engages thesurface 5 and locks the swiveled base against turning. In thisconstruction the split ring performs an additional and very importantfunction. As the ring is expanded the tapered surface of the ring has awedging action on the surface 5 which tends to force the ringdownwardly. This downward pressure is sustained by the bolt 8 and screw12 and as these are carried by the swiveled base the effect is to clampthe swiveled base firmly on the fixed base 1 so that the whole structurewhen locked is rigid. The beveled surfaces 10 should have a relation tothe bevel or taper of the surface so as to balance the expanding actionand the downward pull on the screw due to the wedging action of thering.

It will be noted that this structure forms a base of very simpleconstruction free from grooves which must be formed by coring and thatthe structure is such that any finishing can be readily accomplished.

In Fig. 4: the split ring 7 has a portion cylindrical and a portiontapered, the tapered portion 7 being at a greater angle to the axis thanthe taper of the ring shown in Fig. 2. The effect of this is to increasethe wedging action of the ring and down ward thrust or pressure exertedby the ring on the bolt 8 and screw 12, or in other words, to increasethe clamping action between the swiveled base 2 and fixed base 1. Theparts may thus be varied to suit the requirements.

What I claim as new is 1. In a vise mounting the combination of a fixedbase and a swiveled base one of said bases having an annular surface; asplit ring within said annular surface secured to and locked with theother base and having its outer surface engaging the said annularsurface, one of said surfaces being tapered; and means for expanding thering into engage ment with the annular surface.

2. In a vise mounting the combination of a fixed base and a swiveledbase, the fixed base having a downwardly flaring tapered surface; asplit ring within the surface secured to and locked with the swiveledbase; and means for expanding the split ring into engagement with thetapered surface on the fixed base. 3

7 surface; a split ring within the surface seecured to and locked withthe swiveled base and a block between the ends ofthe ring for expandingthe ring into engagement with the tapered surface.

4. In a vise mounting the combination of a fixed base and a swiveledbase, the fixed base having a downwardly fiaringtapered surface; a splitring within the surface locked with the swiveled base; a blockwedg ingupwardly between the ends of the ring for expanding the ring intoengagement with the tapered surface; and means con- Copies of thispatent maybe obtained for nected with 3. In a visemounting thecombination of fixed base and a swiveled base, the fixed base having adownwardly flaring tapered the swiveled base acting to lift the block. fI I 5. In a vise mounting'the combination of a fixed base and a swiveledbase the fixed base having a downwardly flaring tapered surfacey awsplitring'within the surface;

means for securing the ring to and locking the same with the swiveledbase; a block wedging upwardly between the ends of the ring forexpanding the ring into engagement 7 with said tapered surface; andmeans confive cents each, by addressing the Commissioner of Patents, 7Washington, 10.0. s

